/Engine/Source/Editor/SubobjectDataInterface/Public/SubobjectDataSubsystem.h
Walk the hierarchy up to find theAActorroot for the given handle
The handle of the root actor if one exists, FSubobjectDataHandle::InvalidHandle otherwise.
static [FSubobjectDataHandle](API\Editor\SubobjectDataInterface\FSubobjectDataHandle) GetActorRootHandle ( const [FSubobjectDataHandle](API\Editor\SubobjectDataInterface\FSubobjectDataHandle) & StartingHandle )